iPhone 6 Battery troubleshoot

[valenrandy]

I have a launch day iPhone 6 that has worked great from the beginning but noticed battery issues around September of last year. Since then it has gotten progressively worse (4 hours total usage) to where I felt I had to do something about it. Early January I downloaded an app that showed battery capacity and state of health and showed my battery was only holding a total charge of around 1300mah vs 1810ma that it should be. Prior to this I would average 7.5 to 8 hours per day of my routine usage.

Naturally I thought this was my issue, my battery was just bad and I was only running on 70+% of my battery. I replaced my battery and confirmed 1810mah and all was well.... so I thought.

My battery now lasts a full 5 hours so I did increase my time by 1 full hour but I feel something is still messing with my phone. I ran 2 easy enough tests to set some base numbers.

Test #1: Use phone as I normally do (some video/facebook/applewatch/music to Airpods/text/ a few calls)
5 hours 10 minutes usage on 17 hours standby time. Battery at 3%

Test #2: Did not use phone but set it so as the display is always on (auto brightness on inside house).
5 hours 30 minutes usage on 6 hours standby time. Battery at 5%

While doing these test I also noticed that under the battery tab I no longer get a breakdown of battery usage per app and time of use per app. This could possibly be a bug as it has been 2 weeks now. There is a message stating :Battery information will be available after using the iPhone for a few minutes".

I'm willing to do a full restore as new to see if maybe its one of my apps or something is corrupt within iOS but I need to see how to proceed with it regarding my Apple Watch and my overall health data.

1. If I restore as new I loose all my health data and do not get that back correct?

2. If I restore as new I would also have to first un pair my Apple Watch. In doing so I would loose all of the watches data as it will be lost during the phones restore as new correct?

3. should I un pair my Apple watch and do a backup to icloud or iTunes, restore as new and then restore from a backup?

I would really hate to lose the last several years of health data so any and all advise would be appreciated.

Thanks for the help!

 

[valenrandy]

I ran another unscientific test where I placed the phone on "low power" mode at 100% charge in the morning. There were no running apps and the screen was set to autolock after a minute so for the entire time the screen was off and the phone received a couple of alerts/messages (15 total) during the day.

When I stopped the test 12 hours later, the phone battery was at 75%.

Looks like 2 days standby time while on power saver mode on.....

 

[valenrandy]

After 24 hours, the phone is at 48% battery and this is without any type of use other than a couple of notifications/texts.

 

[addey]

Oops mis-read post hence the edit.

 

[valenrandy]

After 36 hours the phone is at 26% battery remaining and other than a few messages received, no usage.

 

[Gav.Winters]

Is it an official Apple battery? I imagine you can just back the health data up before restoring if it comes to that.

 

[valenrandy]

Is it an official Apple battery? I imagine you can just back the health data up before restoring if it comes to that.

Thanks for the reply!

The battery I just put in is not official apple, but I do not suspect it is the battery as it tests good and this was the same basic behavior I had prior to the new battery.

As of 4am this morning my iPhone was dead. looks like I received about 2 days worth of standby time with "low power mode" on. I had an additional spare battery that I have now swapped out to do an additional time run with to see if there is a correlation with the batteries and to help me pin point if this is a software issue or possibly hardware other than battery?

I want to hope that its a rouge app or maybe even a curropt file in iOS that is causing this and a fresh clean iOS install may fix it but I really do not want to loose my health/activity/fitness/ & apple watch info.

I need to find a way to somehow extract health info from the phone and watch and transfer it back to the new installation.

 

[valenrandy]

My Solution.....

I figured out how to safely remove health/activity and watch data from phone and merge it with a fresh install of IOS.
Even after the fresh install, the battery only lasted just under 4 hours with a dim screen and a video on loop.

Solution?????? Brand new iPhone 7+, It is a pricey solution but a nice upgrade from what I had and on top of that my wife looked a bit sad with her oldy iPhone 6 (which still works fine) so I got her one as well.

I restored from a backup that had all of my normal stuff and ran the 7+ through a timed test. 11 hours of use with 4% left. FANTASTIC!

Interesting note though, I placed my old iP6 on airplane mode and left wifi on. From Saturday through this morning it has only lost 15% of battery. Could it have been the cell radio???

Thanks.

 

[Leonard1818]

The battery on my iPhone 6 bit it right around Sept. last year also. It'll go from 40% down to 20 then down to 2... all within 5 minutes. I haven't DL'd a battery app yet but when my wife's 6s started doing the EXACT SAME THING, we got the battery replaced by Apple under the extended warranty. I found this thread in searching on the issue. I want to put a new battery in and let my kid have it to play around with (I have a 7+) but I don't know if that'll really solve the problem.

As a side note, if I put mine in airplane mode, I can get like 1.5 weeks of standby on it.... hmmm...